US1559856A - Loading engine - Google Patents

Description

Nov. 3,1925. v 1,559,856

' M. H. DICKINSON LOADING ENGINE Filed July 20, 1 2 5 Sheet s-Sheet 1 N VEN TOR.

ATTORNEYS M. H. DICKINSON Nov. 3, 1925.

LOADING ENGINE Fi d July 20, 1921 5 Sheets-Sheet 2 H w. "W

5. w $2 0 WWW 1% a INVENTOR.

ATTORNEYS Nov. 3; 1925.

M. H. DICKINSON LOADING ENGINE J 0 a v 7 v 06 I m f INVENTOR.

A TTORNEY-S Nov. 3, 1925.

M. H. DXCKINSON LOADING ENGINE Filed July 20, 1921 5 Sheets-Sheet 4- l/M/l/l/lI/I/l/l/ /////m Hillllmm 62 ATTORNEY.

Nov. 3,1925. 1,559,856

M. H. DICKINSON LOADING ENGINE Filed July 20, 1921 5 Sheets-Sheet 5 1N VEN TOR.

W ATTORNEXS Patented Nov. 3, 1925.

UNITED STATES MERIAN H. DICKINSON, OF SEATTLE, WASHINGTON.

LOADING ENGINE.

Application filed July 20, 1921.

To (all whom it may concern.

Be it known that I, MERIAN H. DICKIN- SON, a citizen of the United States, residing at Seattle, in the county of King and State of lVashington, have invented certain new and useful Improvements in Loading Engines, of which the following is a specification.

My invention more particularly relates to a loading device comprisinga plurality of motors or engines for loading the logs, and is particularly applicable where two such engines are used.

My invention will best be understood by reference to the accompanying drawings in which I have illustrated a preferred embodiment of my invention, and in which Figure 1 is a diagrammatic view in side elevation i1- lustrating a skidding system, and a loading system embodying my invention; Fig. 2 is a plan view thereof; Fig. 3 is a side view of the loading device; Fig. 4 is a plan view thereof; Fig. 5 is a longitudinal section through the steam cylinder and associated parts for releasing the clutch mechanism of one of the loading engines; Fig. 6 is aplan view, partially broken away to show certainv parts in section of the control lever; Fig. 7 is a longitudinal section through the loadlng drum and assoclated parts of one of the engines, and Fig. 8 is a longitudinal sectional view of the drum and associated parts of the other engine. 7

Like reference character parts in the various figures.

Referring, now, to the drawings, and first to Figs. 1 and 2, 10 is a main supporting cable passing over a sheave or sheaves 11 secured to the head spar or tower 12, it being understood that the cable 10 is anchored at its opposite ends. The head spar or tower 12 is preferably held in position by guys 12 in the usual manner. A skidding carriage 13 is movable along the supporting cable 10 and is moved in one direction by an outhaul cable 14 connected to the carriage, as at 15, it being understood thatthe cable passes over a sheave at the tail tower, or other point of support (not shown), and returning passes overa sheave 16 on, the head spar and is wound on a drum 17 of the skidding engine, the skidding engine being indicated in general at 18. A skidding line 19 passes over a sheave 20 pivotally connected to the skidding carriage 13, as indicated in Fig. 1, and also passes over asheave21 attached to the indicate like Serial 110.4%,101.

head spar, the skidding line being wound upon a drum 22 of the skidding engine. The skidding line is shown attached to a plurality of logs 23 which are being dragged .pulling cable passes over a sheave 27 on the head spar and is wound upon a drum 28 of the skidding engine. The skidding system described above which is used for hauling the logs from a distant point tothe position where they are to be loaded, as on afiat car, is well known and constitutes no part of'my present invention.

In accordance with my invention, loading cables 29 and 30 pass over sheaves 31 and 32 pivotally'connected to loading carriages 33 and 34, the loading cables being provided at their ends with hooks 35, or other attaching means, which may be secured at separated points to the ends of a log or other load on opposite sides of the center of gravity thereof. I have illustrated the loading operation beingcarried out with logs, one of which is indicated at 23 in a position to be lowered onto a fiat car 36, the wheels of which engage the track rails 37 of a track 38. The loading carriages 33 and 34 are supported on cables 39 attached atone end to the head spar, as at 39 andat the opposite end to anchors 39 and 39, as illustrated in Fig. 1,

the carriages being properly spaced apart to permit the ends of the loading lines to be connected to a log or other 1021a. The car riages 33 and 34 are fixed in position by guys 33 and 34*, which are" also anchored to the ground, and prevent the carriages traversing the cables toward the head spar, the weight of the cables and connecting parts on the carriage being. sufficient to prevent their moving in the opposite direction, toward the gines as the preferred form of power means for operating the loading cablesi th'e (3.111111: 42 is loosely mounted on a shaft 44 having its bearings at 45 in the bed-frame 46; The drum 42 is mounted adjacent to a gear wheel 47 secured on the shaft 44 and is normally held therewith, so that the gear and the drum rotate together by means which will be more fully described hereinafter: engages .a' driving pinion 48 secured'o-n a shaft 49, which llZISitS bearings in the frame 46. Crank discs 50 are preferably secured to either end of the shaft 49 andare pro.- vided with crank pins 51 which are; connected to cylinders 52 of one of. the loading engines or motors A through suitable connections, which I have indicated at 53 by dotted lines. The engine A is controlled by' a manually operated lever 54 which is pivotally mounted for vertical. movement on a shaft 55; I have illustrated at 544 a'second lever for controlling the second engine by connection, which will be later described The parts assoc ated therewith are s milar to those associated with the lever 54, and

are indicated by the same reference characters with the letter a appended, and certain of the parts whichwill now be described are illustrated more clearly in connection with the lever54 than are those in connection with the lever 54, and reference shouldbe made thereto. Thelever 54 is preferably bolted, as at 56, to a casting 5,7,: which is provided with upper and; lower plates 58 (see Fig. 3), embracing a sleeve 59, which surrounds the shaft "55, having its bearings at 60,fin a standard. or bracket 61 The plates 58 are secured to the collar 59 by pins62, indicated" in dotted. lines in Fig. 6, 'so-that the collar 59 is rotated by the vertical rotation of'the lever 54 at the same time the plates 58 are pivotedon the pins so tl1at=the lever 54 may be moved laterally and has, in effeetfi'iniversall movement, themovements of the lever in one plans being utilized to control motive power to the motor "and in'another'plane to control the slip connections between-the asso ciated' motor and t'heload, 'An arm 63 18 attached to the collar 59and is preferably formed integral therewith, as indicated in Fig. 6. One end of a link 64 is pivoted, as

at 65, to the end of, the arm 63; and the other end of the link 64 is pivoted to alra-rm 67 "which is secured-.to a shaft having its hearings in a standard 69Q To the shaft 68 is also secured an arm 70 to which is pivoted, as at 71, one endof ,a link.

72, the opposite endof which is pivoted at 7 3z'toanarm 7 4 securedion a shaft having its bearings in the frame and eiztending.

to the opposite side of the engine, as indicated in -At an intermediate point of the shaft 7.5 is secured an arm 7 6, to the in frictional engagement The gear 47.

' turn, connectedby two connecting rods 104 outer end of which is pivoted a stem 77 which eitends upwardly i totlie valve chest 7s"aiid'e0i115i-01s the admission of steam through the pipes 79 to the. cylinders 52 in a wen iznziwnmanner."" The movement of the leverr 54 preferably controls the admis sion of steam in the following manner: hen the lever 54 is raised above its horizontal position 'st'eain is admitted to the cylinders 52 to prodnce forward movement of nections more or less, so' 'that 'the load on either of. the drums may be lowered without posit vely. dr ving theengme." Th s control is preferably effe ed' 'by tlie same levers which control the eng nes themselves. In

the embodiment her-genesis, the casting or member .57. is 'pi'0videdfwit'h a laterally projecting arm whi. clfforrns with the lever a bell=crank so that.a,lateral 'move1n'ent of the lever 54, wilLmove the arm 80 forwardlv or back-,wardly. To the-end ofthe ar n 30 ,.is pivoted aj linlg thefopposite end of which is pivoted to: arnr 82 secured .on a

eft 0 the Oim'esi'te 'n ems Shift.

83 is semredan'larm 84' to 'w'hich pivoted, as at85, one endof ajlinkfiii, the opposite endfofjvhich isffpivgtedfl i} 87.1 9 anarn fSS secunedfon. a, shaft SS) having its bearings in the frame" and extending across the en gine, as indicated in i", 4, To the oppo site end of a shaft 89 is secured an ar n" 90. as .indicatedin Fig. 4, which is pivoted at 91 to a link 92, thje o pposi t e end of which is pivoted at 93in anfai 1 shaft'95 liav'ingits hear ngs in the casing 9610f the valvechesh fas indicated iiiFigj. 5, the shaft passing through the valve chest. To theshaft 95 1s secured" within the valve chest a mntilat ed gear 97lwhich engages a rack 98 forn'ied'lon theslide valve 99 which controls the admission and e i l' aust of steam to the stealn cyl id'er 1OQ, the usual manneij'andtheco ion forlwliich need not bespecifically?descr h i i the steam' cy li ncler'is c'o'n nected by a piston rod l02 to' a cross-l1'ead51( l3,"which is, in

to an'arm 105 secured on a's'haft 106, so that the. reciprocation 'of ltlie piston rocks the shaft 106, Brefeiably a d ashpot, indicated in general atj1Ol7 provid dforcontrolling I e pistonl For cylinder. 108', is provided refer-ablyfilled with oil, and withthe speed. {Ope -anti? of this purpose a i which p U y y, in which is'a piston 169 connected bya stem:

" secured on a i to the cross-head 103. A by-pass pipe 111 is preferably provided and is nippled at 112 and 113 to the respective ends of the cylinder 108. The by-pass pipe 111 is provided with a valve 114 for controlling the flow of liquid through the by-pass and thereby controlling the dash-pot effect of the cylinder 107. I

The rocking of the shaft 106 effects the release of a slip connection between the drum 42 and the gear 47 by mechanism the preferred form of which will now be described.

To the shaft 106 is secured an arm 115 (see Fig. 3), to the outer end of which is pivoted, as at 116, a link 117, the other end of which is pivoted at 118 to an arm 119 (indicated in dotted lines in Fig. 3), which is secured to the head 120 of a screw 121 (see Fig. 17) received in a screw threaded opening 122 in the frame. The inner end of the screw engages, as at 123, the end of a rod 124 extending axially through the shaft 44 on which is loosely mounted the loading drum 42. The opposite end of the rod 124 engages a key 125 passing through a slot 126 with which the shaft 44 is provided. The key 125 in turn engages a collar 127 surrounding the shaft, theopposite edge of the collar 127 engaging a ring 128 loosely surrounding the shaft, which in turn engages'a stiff coil spring 129, which is placed under compression between the ring 128 and a collar 130 spaced from the ring 128 and adjustably secured to the shaft 44. The collar 130 is preferably provided with a sleeve 131 of smaller external diameter which may be integral therewith, and which surrounds the shaft 44 and forms a seat for the spring 129. The ring 128 overlaps the collar 127 and the inner portion of the drum 42. One of the flanges 132 of the drum is preferably provided with a laterally ext-ending flange 133, which forms onits interior at 134 a frictional engagement with a corresponding flange 135, secured to, or integral with, a plate 136, which is in turn secured to the gear wheel 47 secured on the shaft 44. Normally, the spring 129 forces the drum 42, through the collar 128, into engagement with the gear wheel 47 with sufiicient force to ensure the drum being'r otated by the gear wheel. lVhen the described control mechanism forces the stem 124 to the left, as viewed in Fig. 7, and compressesthe spring 129 in the manner described, the frictional engagement between the drum and the gear wheel is lessenechand the load, such as the log, may thereby be lowered by the slipping of the drum with reference to the gear wheel. I have illustrated in Fig. 7 a .spotting drum 137 which may be used for moving cars. This drum is preferably provided with a flange 138 which forms frictional engagement at 139 with the gear wheel 47. Normally the frictional connection is disengaged by a spring 140 interposed between the spottingdrum and'the gear wheel, but which may be compressed by a manually operated lever 141 to bring the spotting drum into engagement with the gear wheel an'd'thus actuate the drum 137. It will be gunderstood that the cable wound on the,

drum 137 is connected to carsfor the pur-' pose of moving them along the track. It will also be understood that. the spotting operation and loading operation are not carried on simultaneously and that when 'thes spotting operation is to be carried on then the loading drum 42 is disconnected from the gear.

The

frictional engagement between the drum 42 and the gear 47 may readily be ad justed by moving the collar 130 longitudi- 3 nally of the shaft and thus compressing to a" greater or less extent the spring 129. The

collar 130 may be adjusted conveniently by means of a screw 142 similar to the screw 121, the inner end of the screw engaging the rod 143 extending longitudinally through the shaft and engaging a key 144 extending transversely through a slot 145 in the shaft 44. The key 144 engages the collar 130and is mounted forunix'ersal movement on the shaft 55" in the same manner as the shaft '54. To the arm 63 is pivoted a link 146, theopposite end of which is pivoted at 147 to an arm 148 secured on a shaft 149 extending across the engine, as indicated in Fig. 4, and having its bearings in the frame of the machine. On the shaft l49 is secured an arni 150 to which is pivoted at 151 a link 154, the opposite end of which is pivoted at 155 to an arm 156, which is in turn secured to a shaft 157 having its bearings in the frame of the machine. On the shaft 157 is secured an arm 158, the outer end of which is pivoted at 159 to a stem 160 which extends upwardly into the valve chest 161 and controls the ad mission of steam through the pipes 162 to the cylinders 163 of the'engine B. The

cylinders 163 .are connected at 164 to the crank pins 165 of crank discs 166 on the opposite ends of the shaft 167 having its bear- ;ings in the frame 46'. On the shaft 167 is secured a pinion 168 meshing with a gear wheel 169 secured on the shaft 170 and having its bearings in the frame 46 and on which is also loosely mounted the drum 43. The vertical movement of the lever 54 con trols the operation of the engine'B and of the drum 43 in. the; same manner that the lever 54, controls the drum 42, and need not} further be described; I

To the. arm-8O on the casting 57 is com nected alink 171', the opposite end of which is pivoted at 172 to an arm 173 secured ona,

shaft 17.4, having its bearings in theframe. Tothe shaft 174 is also securedan arm 175, pivoted at 176, to one end of a link. 177, the opposite endof which is pivoted at 17 8 to an arm l79 which is secured to a shaft 180 passing through the valve casing 181 and controlling the piston within a cylinder 182 in precisely the same manner as the cylinder 100, and the connections from the piston of which need, not, be. more specifically described, The operation of the pistonrocks a shaft 183 (see Fig. 4) having its bearings.

inblocks 1840f theframe.v To the, shaft 183 V is secured an arln1=185to which is pivoted at 18.6 -arlin1{,18,7,, the opposite end of which. is pivoted at 188, to anarm 189 which rocks a screwi190 in the same manner that the screw 12'1- inFig. '7 was rocked; The inner end of the screw-190 engages a rod 191 extending axially thronghthe, shaft 170, the opposite encl;-; o.f(the rod 191 engaging a key 192,,which in turn engages .a collar 193, andthis collar in turn engages, a,c olla r 194 which releases the spring 195- and; thereby, disengages the friction clutch connection between. the drum 43" andlthezgear- 1,69, in,prec ise1y thesame.

manner-as, in; the case of thedrum 42 and thegeant'l, The specificarrangement of the slip connectionbetween the. engines. and the drums 42 andf43 and the-control therefor is not,claimed,lherein, as-I am. notthe first in ventor thereof, the same being the invention of Thomas Spencer- Miller, of South.Orange,. Newderseyt The spottingdrum-137 may be vto'be loaded by, a skidding, arrangement which-1 may. be the. same as that described. Theihooks: 35 on the loading cables 29 and 30 are then attached. to a log 23. The opera. tor the nlraises-thelevers 54 and 54 thereby applying steam pressure to both engines A p and Bftoproduee forward movement thereot' and 'haulin; the loadingcables and raise the log to-ltheposition indicated in Fig.1., Incase the loacl is'ligl 1t, or for otherreasons' it is desired todower the loadby' steam 1 pressure,thejoperator depresses the leversv 54;,ajid 54t below the-horizontal positions,

thereby reversing theengines Aand B and causing the steam engines'tojrotate positively the drums 42 and 4? on which the loading; cables are wound in a direction to pay, out the cables. Ordinarily, however, it is de-. sirable to lower the cables Without use of steam pressure, and in accordance with my invention this is'accomplislied by releasing the slip connections between thetwo engines and their associated drums in the described manner, the slip connections permitting the load to be lowered. By suitably manipulat ing the levers 54and 54 as by moving themlaterally and moving them back, to their original positions, more or less steam may, be! admitted to the cylinders to produce more or less movement of the pistons 101 therein, and'thereby control'the amount of friction in the slip connections so that the speed of the lowering]operationmay be controlled; The speed at which the'load' maybe lowered may further be controlled'i by the valve 114 which controls the by-passfor' the fluid in the cylinder 107; I

By the provision of'the mechanism for permitting the slipping v connection between the loading drums and the gears withwhichthey are associated, the logsmay be lowered at a much greater speed thanwhere; they are lowered by the steam engine, as isusually the case. Furthermore, they are, loweredv without wasting steam and 'withoutthewear and tear. on the engineithatwould result when the engines are usedyfor lowering th'e load. I

VVhatl' claim and desire to secure by Letters Patent of'th'e Unitedlstates is:

1'. In an engine, a winding drum, a, motor for operating the, same, 'a slip connection interposed between said 1 motor and said drum, a manually operable member movable in different planes, means responsive to the" movement of said memberin one plane for controlling the energy supplyto said motor, and means responsive to, the movement of said. member in a different plane for, controlling said slip connection.

2. In a log loading device, two independent motors, separate means operated by th'e respective motors and :adapted to ,be simultaneouslyiconnected to a log at opposite sides of the center of gravity thereof, separate control means for the respective motors, independent slip connections" interposed between each'motor and the connections for the log forlowering thelog, and manually operable members operable. in different planes, each member operable'in one plane for controlling themovementof the associated motor in eitherdirection and in another planetfor controlling theslip connections.

3. In a log loading, device, twoindepend ent motors, separate means operated by the respective motors and adapted-to be simultaneously connected to alog at opposite sides in different planes, each member operable of the center of gravity thereof, separate in one plane for controlling the movement 10 control means for the respective motors, inof the associated motor in either direction dependent slip connections interposed beand in another plane for controlling the tween each motor and the connections for slip connections.

the log for lowering the log, and manually In testimony whereof I have hereunto operable members adjacently located and signed my name. accessible to a single operator and operable MERIAN H. DICKINSON.

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